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Petroleum Refinery Engineering

Petroleum Refinery Engineering
Tetra-ethyl lead is added in gasoline to

Reduce the pour point
Reduce gum formation
Increase its octane number
Increase its smoke point

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Petroleum Refinery Engineering
Hydrofining is the most recent and effective method for the

Removal of sulphur
Reduction of breathing loss
Improvement of viscosity index
Improvement of smoke point

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Petroleum Refinery Engineering
Petroleum

Does not contain aromatics
Constitutes mainly of olefins
Does not contain asphalt
Is optically active

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Petroleum Refinery Engineering
Waxy crudes are treated with chemical additives mainly to

Depress its pour point
Remove wax
Precipitate wax
Dissolve wax

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Petroleum Refinery Engineering
Smoke point of a good burning kerosene may be around __________ mm.

60-75
20-25
100-120
0-5

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Petroleum Refinery Engineering
Naphtha yield in straight run distillation of crude oil may be about __________ percent.

12
2
18
6

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